(* * Copyright (c) 1997-1999 Massachusetts Institute of Technology * Copyright (c) 2003 Matteo Frigo * Copyright (c) 2003 Massachusetts Institute of Technology * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * *) (* $Id: gen_r2r.ml,v 1.3 2003/04/17 19:25:50 athena Exp $ *) (* generation of trigonometric transforms *) open Util open Genutil open C let cvsid = "$Id: gen_r2r.ml,v 1.3 2003/04/17 19:25:50 athena Exp $" let usage = "Usage: " ^ Sys.argv.(0) ^ " -n " let uistride = ref Stride_variable let uostride = ref Stride_variable let uivstride = ref Stride_variable let uovstride = ref Stride_variable type mode = | RDFT | HDFT | DHT | REDFT00 | REDFT10 | REDFT01 | REDFT11 | RODFT00 | RODFT10 | RODFT01 | RODFT11 | NONE let mode = ref NONE let speclist = [ "-with-istride", Arg.String(fun x -> uistride := arg_to_stride x), " specialize for given input stride"; "-with-ostride", Arg.String(fun x -> uostride := arg_to_stride x), " specialize for given output stride"; "-with-ivstride", Arg.String(fun x -> uivstride := arg_to_stride x), " specialize for given input vector stride"; "-with-ovstride", Arg.String(fun x -> uovstride := arg_to_stride x), " specialize for given output vector stride"; "-rdft", Arg.Unit(fun () -> mode := RDFT), " generate a real DFT codelet"; "-hdft", Arg.Unit(fun () -> mode := HDFT), " generate a Hermitian DFT codelet"; "-dht", Arg.Unit(fun () -> mode := DHT), " generate a DHT codelet"; "-redft00", Arg.Unit(fun () -> mode := REDFT00), " generate a DCT-I codelet"; "-redft10", Arg.Unit(fun () -> mode := REDFT10), " generate a DCT-II codelet"; "-redft01", Arg.Unit(fun () -> mode := REDFT01), " generate a DCT-III codelet"; "-redft11", Arg.Unit(fun () -> mode := REDFT11), " generate a DCT-IV codelet"; "-rodft00", Arg.Unit(fun () -> mode := RODFT00), " generate a DST-I codelet"; "-rodft10", Arg.Unit(fun () -> mode := RODFT10), " generate a DST-II codelet"; "-rodft01", Arg.Unit(fun () -> mode := RODFT01), " generate a DST-III codelet"; "-rodft11", Arg.Unit(fun () -> mode := RODFT11), " generate a DST-IV codelet"; ] let generate n mode = let iarray = "I" and oarray = "O" and istride = "istride" and ostride = "ostride" in let ns = string_of_int n and sign = !Genutil.sign and name = !Magic.codelet_name in let name0 = name ^ "_0" in let vistride = either_stride (!uistride) (C.SVar istride) and vostride = either_stride (!uostride) (C.SVar ostride) in let _ = Simd.ovs := stride_to_string "ovs" !uovstride in let _ = Simd.ivs := stride_to_string "ivs" !uivstride in let (transform, load_input, store_output) = match mode with | RDFT -> Trig.rdft sign, load_array_r, store_array_hc | HDFT -> Trig.hdft sign, load_array_c, store_array_r (* TODO *) | DHT -> Trig.dht 1, load_array_r, store_array_r | REDFT00 -> Trig.dctI, load_array_r, store_array_r | REDFT10 -> Trig.dctII, load_array_r, store_array_r | REDFT01 -> Trig.dctIII, load_array_r, store_array_r | REDFT11 -> Trig.dctIV, load_array_r, store_array_r | RODFT00 -> Trig.dstI, load_array_r, store_array_r | RODFT10 -> Trig.dstII, load_array_r, store_array_r | RODFT01 -> Trig.dstIII, load_array_r, store_array_r | RODFT11 -> Trig.dstIV, load_array_r, store_array_r | _ -> failwith "must specify transform kind" in let locations = unique_array_c n in let input = locative_array_c n (C.array_subscript iarray vistride) (C.array_subscript "BUG" vistride) locations in let output = transform n (load_array_c n input) in let oloc = locative_array_c n (C.array_subscript oarray vostride) (C.array_subscript "BUG" vostride) locations in let odag = store_output n oloc output in let annot = standard_optimizer odag in let tree0 = Fcn ("static void", name0, ([Decl (C.constrealtypep, iarray); Decl (C.realtypep, oarray)] @ (if stride_fixed !uistride then [] else [Decl (C.stridetype, istride)]) @ (if stride_fixed !uostride then [] else [Decl (C.stridetype, ostride)]) @ (choose_simd [] (if stride_fixed !uivstride then [] else [Decl ("int", !Simd.ivs)])) @ (choose_simd [] (if stride_fixed !uovstride then [] else [Decl ("int", !Simd.ovs)])) ), add_constants (Asch annot)) in let loop = "static void " ^ name ^ "(const " ^ C.realtype ^ " *I, " ^ C.realtype ^ " *O, " ^ C.stridetype ^ " is, " ^ C.stridetype ^ " os, " ^ " int v, int ivs, int ovs)\n" ^ "{\n" ^ "int i;\n" ^ "for (i = v; i > 0; --i) {\n" ^ name0 ^ "(I, O" ^ (if stride_fixed !uistride then "" else ", is") ^ (if stride_fixed !uostride then "" else ", os") ^ (choose_simd "" (if stride_fixed !uivstride then "" else ", ivs")) ^ (choose_simd "" (if stride_fixed !uovstride then "" else ", ovs")) ^ ");\n" ^ "I += ivs; O += ovs;\n" ^ "}\n}\n\n" and desc = Printf.sprintf "static const kr2r_desc desc = { %d, \"%s\", %s, &GENUS, %s, %s, %s, %s, %s };\n\n" n name (flops_of tree0) (match mode with | RDFT -> "RDFT00" | HDFT -> "HDFT00" | DHT -> "DHT" | REDFT00 -> "REDFT00" | REDFT10 -> "REDFT10" | REDFT01 -> "REDFT01" | REDFT11 -> "REDFT11" | RODFT00 -> "RODFT00" | RODFT10 -> "RODFT10" | RODFT01 -> "RODFT01" | RODFT11 -> "RODFT11" | _ -> failwith "must specify a transform kind") (stride_to_solverparm !uistride) (stride_to_solverparm !uostride) (choose_simd "0" (stride_to_solverparm !uivstride)) (choose_simd "0" (stride_to_solverparm !uovstride)) and init = (declare_register_fcn name) ^ "{" ^ " X(kr2r_register)(p, " ^ name ^ ", &desc);\n" ^ "}\n" in (unparse cvsid tree0) ^ "\n" ^ loop ^ desc ^ init let main () = begin parse speclist usage; print_string (generate (check_size ()) !mode); end let _ = main()